Huawei UPS5000-A-30KTTL - Page 51

Identier Name Description
PARALLEL Parallel port The PARALLEL port transmits parallel signals between racks.
Dry Contacts
The dry contacts allow the UPS to manage the battery system (including the
external battery switch and battery detector), provide alarm signals for external
devices, and implement remote emergency shutdown.
Identier Type Working
Principle
Signal
Description
Status
Description
System Action
BFP_NO DO The BFP port
is the signal
port for
bypass
backfeed
protection.
NO and COM
are normally
open (NO)
contacts, and
NC and COM
are normally
closed (NC)
contacts.
When backfeed
occurs, the NO
contacts close and
the NC contacts
open.
A circuit used to
drive alarm
signals or
quickly
disconnect
energy backfeed.
BFP_COM
BFP_NC
BTG DI Port for
detecting
battery
grounding
failure
The default value
is Open:
● BTG port
closed: battery
grounding fault
● BTG port open:
no battery
grounding fault
The value can be
changed to
Closed:
● BTG port open:
battery
grounding fault
● BTG port
closed: no
battery
grounding fault
After the setting
takes eect, the
system will
generate a
battery
grounding fault
alarm.
0V Port for signal
ground
UPS5000-A-(30 kVA-120 kVA)
User Manual 2 Product Overview
Issue 17 (2024-02-21) Copyright © Huawei Digital Power Technologies Co., Ltd. 42